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Progress in Producing Large Area Flexible Dye Sensitized Solar Cells

Published online by Cambridge University Press:  01 February 2011

Krishna C. Mandal
Affiliation:
EIC Laboratories, Inc., 111 Downey Street, Norwood, MA 02062–2612, USA
Michael Choi
Affiliation:
EIC Laboratories, Inc., 111 Downey Street, Norwood, MA 02062–2612, USA
Caleb Noblitt
Affiliation:
EIC Laboratories, Inc., 111 Downey Street, Norwood, MA 02062–2612, USA
R. David Rauh
Affiliation:
EIC Laboratories, Inc., 111 Downey Street, Norwood, MA 02062–2612, USA
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Abstract

Dye sensitized nanocrystalline TiO2 solar cells have been reported with over 11% efficiency and are extremely promising as very low cost and lightweight photovoltaic sources. However, most reports are for cells of low area fabricated on glass, which withstands processing temperatures of ∼450°C. In this paper, we describe the fabrication and performance of cells made on flexible ITO-coated polyethylene terephthalate (PET) substrates with 6” × 3” dimensions. To improve the efficiency in the cells, we enhanced the ITO current collection efficiency with metallization fingers. The fingers resulted in a >10 fold increase in short-circuit current under normal solar illumination compared to cells without metallization. Further improvements were realized by passivating the metallization fingers at the metal/polymer electrolyte interface.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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References

REFERENCES

1. O'Regan, B. and Grätzel, M., Nature (London) 335, 737 (1991);CrossRefGoogle Scholar
Grätzel, M., J. Photochem. Photobiol. A 164, 3 (2004).CrossRefGoogle Scholar
2. Mandal, Krishna C., Smirnov, Anton, Peramunage, D., and David Rauh, R., (Mater. Res. Soc. 737, Boston, MA, 2003) pp. 739744.Google Scholar
3. See, for example, Burgers, A. R., Prog. Photovolt: Res. Appl. 7, 457 (1999).3.0.CO;2-U>CrossRefGoogle Scholar
4. Okada, K., Matsui, H., Kawashima, T., Ezure, T. and Tanabe, N., J. Photochem. Photobiol. A 164, 193 (2004).CrossRefGoogle Scholar

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